Provide current and historical ownership information on domains / IPs. Identify all connections between domains, registrants, registrars, and DNS servers.
Look into all current and historical DNS / IP connections between domains and A, MX, NS, and other records. Monitor suspicious changes to DNS records.
Get detailed context on an IP address, including its user’s geolocation, time zone, connected domains, connection type, IP range, ASN, and other network ownership details.
Access our web-based solution to dig into and monitor all domain events of interest.
Get access to a web-based enterprise-grade solution to search and monitor domain registrations and ownership details for branded terms, fuzzy matches, registrants of interest, and more.
Detect and block access to and from dangerous domain names before malicious actors can weaponize them. Contact us today for more information.
Unlock integrated intelligence on Internet properties and their ownership, infrastructure, and other attributes.
Our complete set of domain, IP, and DNS intelligence available via API calls as an annual subscription with predictable pricing.
Offers complete access to WHOIS, IP, DNS, and subdomain data for product enrichment, threat hunting and more.
Enjoy priority data access with our premium API services topped with extra perks including dedicated team support, enterprise-grade infrastructure, and SLAs for full scalability and high performance.
Multi-Level API User Administration Now Available - Manage individual API keys for team members in your organization.
Learn MoreObtain a list of the subdomains under a given domain name and their corresponding first-seen and last-seen dates in one click. Test Subdomains Lookup now. Download our product sheet to learn more.
Subdomain Lookup allows you to identify all subdomains associated with any given domain name. With the aid of a database that’s updated daily, increasing by more than 1 million subdomains daily, we provide the most comprehensive and up-to-date information on all subdomains related to a given domain name in a convenient and unified format.
All the subdomains that appear as search results come from a massive Subdomain Lookup database compiled through more than 10 years of data crawling and gets refreshed daily.
Each lookup reveals a list of subdomains related to a domain of interest.
Subdomains Lookup reports can be shared with colleagues instantly using custom URLs.
Attackers are known for using tons of subdomains to evade detection. Identify all the components of their infrastructure for more in-depth investigation results.
Subdomains left unused or forgotten are all too often left insufficiently protected. Make sure these haven’t been illegitimately modified for use in attacks.
Not all lists of indicators of compromise (IoCs) are exhaustive. Attackers may be using more subdomains than those identified as IoCs. Find all possible attack entry points to cover all your bases.
One way to get ahead of the competition is by staying toe-to-toe with business rivals. Their recently added subdomains can clue you into their up and coming product and service launches, as well as the business partners they might be working with.
Identify all your network’s weakest links by going deeper than the domain level. Consider your entire infrastructure so none of your systems are left exposed to threats or risks.
“We did trials with WhoisXML API to make sure the data was truly resulting in successful takedowns. We were able to consistently discover and mitigate real threats as a result of using the products.”
We are here to listen. For a quick response, please select your request type. By submitting a request, you agree to our Terms of Service and Privacy Policy.